code: def test_tf_tensor(self):
      x = tf.constant(1.0)
      y = tensor_util.convert_nonref_to_tensor(x)
      self.assertIs(x, y)
  
imports: import numpy
  import tensorflow.compat.v2
  from tensorflow_probability.python.bijectors import scale
  from tensorflow_probability.python.distributions import normal
  from tensorflow_probability.python.internal import tensor_util
  from tensorflow_probability.python.internal import test_util
  from tensorflow_probability.python.util import deferred_tensor
label_desc: Use image node_id 2 for calling the ConvertNonrefToTensorTest obj's underlying member method code with example usage: obj.test_tf_tensor() without return types